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<div class="header">
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<div class="title">SyclMemoryModel.h</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/***************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> *  Copyright (C) 2017 Codeplay Software Limited</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *  This Source Code Form is subject to the terms of the Mozilla</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *  Public License v. 2.0. If a copy of the MPL was not distributed</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *  with this file, You can obtain one at http://mozilla.org/MPL/2.0/.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *  SyclMemoryModel.h</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> *  Description:</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> *    Interface for SYCL buffers to behave as a non-dereferenceable pointer</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> *    Interface for Placeholder accessor to behave as a pointer on both host</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> *    and device</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> * Authors:</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> *    Ruyman Reyes   Codeplay Software Ltd.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"> *    Mehdi Goli     Codeplay Software Ltd.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"> *    Vanya Yaneva   Codeplay Software Ltd.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> **************************************************************************/</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160; </div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#if defined(EIGEN_USE_SYCL) &amp;&amp; \</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">    !defined(EIGEN_CXX11_TENSOR_TENSOR_SYCL_STORAGE_MEMORY_H)</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#define EIGEN_CXX11_TENSOR_TENSOR_SYCL_STORAGE_MEMORY_H</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160; </div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &lt;CL/sycl.hpp&gt;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#ifdef EIGEN_EXCEPTIONS</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#include &lt;stdexcept&gt;</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#include &lt;cstddef&gt;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#include &lt;queue&gt;</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#include &lt;set&gt;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">#include &lt;unordered_map&gt;</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="preprocessor">#include &quot;../../InternalHeaderCheck.h&quot;</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160; </div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceEigen.html">Eigen</a> {</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="keyword">namespace </span>TensorSycl {</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="keyword">namespace </span>internal {</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160; </div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="keyword">using</span> sycl_acc_target = cl::sycl::access::target;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="keyword">using</span> sycl_acc_mode = cl::sycl::access::mode;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160; </div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="keyword">using</span> buffer_data_type_t = uint8_t;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="keyword">const</span> sycl_acc_target default_acc_target = sycl_acc_target::global_buffer;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="keyword">const</span> sycl_acc_mode default_acc_mode = sycl_acc_mode::read_write;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160; </div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="keyword">class </span>PointerMapper {</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;  <span class="keyword">using</span> base_ptr_t = std::intptr_t;</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160; </div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;  <span class="comment">/* Structure of a virtual pointer</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="comment">   *</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="comment">   * |================================================|</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="comment">   * |               POINTER ADDRESS                  |</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">   * |================================================|</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;  <span class="keyword">struct </span>virtual_pointer_t {</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <span class="comment">/* Type for the pointers</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    base_ptr_t m_contents;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160; </div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    <span class="keyword">operator</span> <span class="keywordtype">void</span> *() <span class="keyword">const</span> { <span class="keywordflow">return</span> <span class="keyword">reinterpret_cast&lt;</span><span class="keywordtype">void</span> *<span class="keyword">&gt;</span>(m_contents); }</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160; </div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <span class="keyword">operator</span> base_ptr_t()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> m_contents; }</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160; </div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    virtual_pointer_t operator+(<span class="keywordtype">size_t</span> off) { <span class="keywordflow">return</span> m_contents + off; }</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160; </div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    <span class="comment">/* Numerical order for sorting pointers in containers. */</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    <span class="keywordtype">bool</span> operator&lt;(virtual_pointer_t rhs)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;      <span class="keywordflow">return</span> (<span class="keyword">static_cast&lt;</span>base_ptr_t<span class="keyword">&gt;</span>(m_contents) &lt;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;              <span class="keyword">static_cast&lt;</span>base_ptr_t<span class="keyword">&gt;</span>(rhs.m_contents));</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    }</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160; </div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    <span class="keywordtype">bool</span> operator&gt;(virtual_pointer_t rhs)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;      <span class="keywordflow">return</span> (<span class="keyword">static_cast&lt;</span>base_ptr_t<span class="keyword">&gt;</span>(m_contents) &gt;</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;              <span class="keyword">static_cast&lt;</span>base_ptr_t<span class="keyword">&gt;</span>(rhs.m_contents));</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    }</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160; </div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    <span class="keywordtype">bool</span> operator==(virtual_pointer_t rhs)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;      <span class="keywordflow">return</span> (<span class="keyword">static_cast&lt;</span>base_ptr_t<span class="keyword">&gt;</span>(m_contents) ==</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;              <span class="keyword">static_cast&lt;</span>base_ptr_t<span class="keyword">&gt;</span>(rhs.m_contents));</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    }</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160; </div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    <span class="keywordtype">bool</span> operator!=(virtual_pointer_t rhs)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;      <span class="keywordflow">return</span> !(this-&gt;operator==(rhs));</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    }</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    virtual_pointer_t(<span class="keyword">const</span> <span class="keywordtype">void</span> *ptr)</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        : m_contents(reinterpret_cast&lt;base_ptr_t&gt;(ptr)){};</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160; </div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    virtual_pointer_t(base_ptr_t u) : m_contents(u){};</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;  };</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160; </div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;  <span class="comment">/* Definition of a null pointer</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;  <span class="keyword">const</span> virtual_pointer_t null_virtual_ptr = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160; </div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;  <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> is_nullptr(virtual_pointer_t ptr) {</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="keywordflow">return</span> (<span class="keyword">static_cast&lt;</span><span class="keywordtype">void</span> *<span class="keyword">&gt;</span>(ptr) == <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;  }</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160; </div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;  <span class="comment">/* basic type for all buffers</span></div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;  <span class="keyword">using</span> buffer_t = cl::sycl::buffer&lt;buffer_data_type_t&gt;;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160; </div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;  <span class="keyword">struct </span>pMapNode_t {</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;    buffer_t m_buffer;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    <span class="keywordtype">size_t</span> m_size;</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    <span class="keywordtype">bool</span> m_free;</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160; </div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    pMapNode_t(buffer_t b, <span class="keywordtype">size_t</span> size, <span class="keywordtype">bool</span> f)</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        : m_buffer{b}, m_size{size}, m_free{f} {</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;      m_buffer.set_final_data(<span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    }</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160; </div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    <span class="keywordtype">bool</span> operator&lt;=(<span class="keyword">const</span> pMapNode_t &amp;rhs) { <span class="keywordflow">return</span> (m_size &lt;= rhs.m_size); }</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;  };</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160; </div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;  <span class="keyword">using</span> pointerMap_t = std::map&lt;virtual_pointer_t, pMapNode_t&gt;;</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160; </div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;  <span class="keyword">typename</span> pointerMap_t::iterator get_insertion_point(<span class="keywordtype">size_t</span> requiredSize) {</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    <span class="keyword">typename</span> pointerMap_t::iterator retVal;</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    <span class="keywordtype">bool</span> reuse = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    <span class="keywordflow">if</span> (!m_freeList.empty()) {</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;      <span class="comment">// try to re-use an existing block</span></div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;      <span class="keywordflow">for</span> (<span class="keyword">auto</span> freeElem : m_freeList) {</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        <span class="keywordflow">if</span> (freeElem-&gt;second.m_size &gt;= requiredSize) {</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;          retVal = freeElem;</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;          reuse = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;          <span class="comment">// Element is not going to be free anymore</span></div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;          m_freeList.erase(freeElem);</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;          <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;        }</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;      }</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    }</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;    <span class="keywordflow">if</span> (!reuse) {</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;      retVal = std::prev(m_pointerMap.end());</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    }</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    <span class="keywordflow">return</span> retVal;</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;  }</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160; </div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;  <span class="keyword">typename</span> pointerMap_t::iterator get_node(<span class="keyword">const</span> virtual_pointer_t ptr) {</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    <span class="keywordflow">if</span> (this-&gt;count() == 0) {</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;      m_pointerMap.clear();</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;      EIGEN_THROW_X(std::out_of_range(<span class="stringliteral">&quot;There are no pointers allocated\n&quot;</span>));</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160; </div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    }</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;    <span class="keywordflow">if</span> (is_nullptr(ptr)) {</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;      m_pointerMap.clear();</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;      EIGEN_THROW_X(std::out_of_range(<span class="stringliteral">&quot;Cannot access null pointer\n&quot;</span>));</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    }</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    <span class="comment">// The previous element to the lower bound is the node that</span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    <span class="comment">// holds this memory address</span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;    <span class="keyword">auto</span> node = m_pointerMap.lower_bound(ptr);</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    <span class="comment">// If the value of the pointer is not the one of the node</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    <span class="comment">// then we return the previous one</span></div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    <span class="keywordflow">if</span> (node == <a class="code" href="group__Core__Module.html#ga0e45b6b2adead7c6a29815b99f9f14dd">std::end</a>(m_pointerMap)) {</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;      --node;</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (node-&gt;first != ptr) {</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;      <span class="keywordflow">if</span> (node == std::begin(m_pointerMap)) {</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;        m_pointerMap.clear();</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        EIGEN_THROW_X(</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;            std::out_of_range(<span class="stringliteral">&quot;The pointer is not registered in the map\n&quot;</span>));</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160; </div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;      }</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;      --node;</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    }</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160; </div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    <span class="keywordflow">return</span> node;</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;  }</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160; </div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;  <span class="comment">/* get_buffer.</span></div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;<span class="comment">   * Returns a buffer from the map using the pointer address</span></div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> buffer_data_type = buffer_data_type_t&gt;</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;  cl::sycl::buffer&lt;buffer_data_type, 1&gt; get_buffer(</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;      <span class="keyword">const</span> virtual_pointer_t ptr) {</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160; </div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;    <span class="keyword">auto</span> node = get_node(ptr);</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;    <span class="keyword">auto</span>&amp; map_node = node-&gt;second;</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;    eigen_assert(node-&gt;first == ptr || node-&gt;first &lt; ptr);</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;    eigen_assert(ptr &lt; <span class="keyword">static_cast&lt;</span>virtual_pointer_t<span class="keyword">&gt;</span>(map_node.m_size +</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;                                                      node-&gt;first));</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    <span class="keywordflow">return</span> map_node.m_buffer.reinterpret&lt;buffer_data_type&gt;(</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;        cl::sycl::range&lt;1&gt;{map_node.m_size / <span class="keyword">sizeof</span>(buffer_data_type)});</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;  }</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160; </div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;  <span class="keyword">template</span> &lt;sycl_acc_mode access_mode = default_acc_mode,</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;            sycl_acc_target access_target = default_acc_target,</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;            <span class="keyword">typename</span> buffer_data_type = buffer_data_type_t&gt;</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;  cl::sycl::accessor&lt;buffer_data_type, 1, access_mode, access_target&gt;</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;  get_access(<span class="keyword">const</span> virtual_pointer_t ptr) {</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;    <span class="keyword">auto</span> buf = get_buffer&lt;buffer_data_type&gt;(ptr);</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;    <span class="keywordflow">return</span> buf.template get_access&lt;access_mode, access_target&gt;();</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;  }</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160; </div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;  <span class="keyword">template</span> &lt;sycl_acc_mode access_mode = default_acc_mode,</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;            sycl_acc_target access_target = default_acc_target,</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;            <span class="keyword">typename</span> buffer_data_type = buffer_data_type_t&gt;</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;  cl::sycl::accessor&lt;buffer_data_type, 1, access_mode, access_target&gt;</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;  get_access(<span class="keyword">const</span> virtual_pointer_t ptr, cl::sycl::handler &amp;cgh) {</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;    <span class="keyword">auto</span> buf = get_buffer&lt;buffer_data_type&gt;(ptr);</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;    <span class="keywordflow">return</span> buf.template get_access&lt;access_mode, access_target&gt;(cgh);</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;  }</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160; </div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;<span class="comment">   * Returns the offset from the base address of this pointer.</span></div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;  <span class="keyword">inline</span> std::ptrdiff_t get_offset(<span class="keyword">const</span> virtual_pointer_t ptr) {</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;    <span class="comment">// The previous element to the lower bound is the node that</span></div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;    <span class="comment">// holds this memory address</span></div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;    <span class="keyword">auto</span> node = get_node(ptr);</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;    <span class="keyword">auto</span> start = node-&gt;first;</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;    eigen_assert(start == ptr || start &lt; ptr);</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;    eigen_assert(ptr &lt; start + node-&gt;second.m_size);</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;    <span class="keywordflow">return</span> (ptr - start);</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;  }</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160; </div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;<span class="comment">   * Returns the number of elements by which the given pointer is offset from</span></div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;<span class="comment">   * the base address.</span></div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> buffer_data_type&gt;</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;  <span class="keyword">inline</span> <span class="keywordtype">size_t</span> get_element_offset(<span class="keyword">const</span> virtual_pointer_t ptr) {</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;    <span class="keywordflow">return</span> get_offset(ptr) / <span class="keyword">sizeof</span>(buffer_data_type);</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;  }</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160; </div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;  PointerMapper(base_ptr_t baseAddress = 4096)</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;      : m_pointerMap{}, m_freeList{}, m_baseAddress{baseAddress} {</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;    <span class="keywordflow">if</span> (m_baseAddress == 0) {</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;      EIGEN_THROW_X(std::invalid_argument(<span class="stringliteral">&quot;Base address cannot be zero\n&quot;</span>));</div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;    }</div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;  };</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160; </div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;  PointerMapper(<span class="keyword">const</span> PointerMapper &amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160; </div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;  <span class="keyword">inline</span> <span class="keywordtype">void</span> clear() {</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;    m_freeList.clear();</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;    m_pointerMap.clear();</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;  }</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160; </div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;  <span class="comment">/* add_pointer.</span></div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;<span class="comment">   * Adds an existing pointer to the map and returns the virtual pointer id.</span></div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;  <span class="keyword">inline</span> virtual_pointer_t add_pointer(<span class="keyword">const</span> buffer_t &amp;b) {</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;    <span class="keywordflow">return</span> add_pointer_impl(b);</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;  }</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160; </div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;  <span class="comment">/* add_pointer.</span></div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;<span class="comment">   * Adds a pointer to the map and returns the virtual pointer id.</span></div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;  <span class="keyword">inline</span> virtual_pointer_t add_pointer(buffer_t &amp;&amp;b) {</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;    <span class="keywordflow">return</span> add_pointer_impl(b);</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;  }</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160; </div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;  <span class="keywordtype">void</span> fuse_forward(<span class="keyword">typename</span> pointerMap_t::iterator &amp;node) {</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;    <span class="keywordflow">while</span> (node != std::prev(m_pointerMap.end())) {</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;      <span class="comment">// if following node is free</span></div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;      <span class="comment">// remove it and extend the current node with its size</span></div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;      <span class="keyword">auto</span> fwd_node = std::next(node);</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;      <span class="keywordflow">if</span> (!fwd_node-&gt;second.m_free) {</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;        <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;      }</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;      <span class="keyword">auto</span> fwd_size = fwd_node-&gt;second.m_size;</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;      m_freeList.erase(fwd_node);</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;      m_pointerMap.erase(fwd_node);</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160; </div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;      node-&gt;second.m_size += fwd_size;</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;    }</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;  }</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160; </div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;  <span class="keywordtype">void</span> fuse_backward(<span class="keyword">typename</span> pointerMap_t::iterator &amp;node) {</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;    <span class="keywordflow">while</span> (node != m_pointerMap.begin()) {</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;      <span class="comment">// if previous node is free, extend it</span></div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;      <span class="comment">// with the size of the current one</span></div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;      <span class="keyword">auto</span> prev_node = std::prev(node);</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;      <span class="keywordflow">if</span> (!prev_node-&gt;second.m_free) {</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;        <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;      }</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;      prev_node-&gt;second.m_size += node-&gt;second.m_size;</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160; </div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;      <span class="comment">// remove the current node</span></div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;      m_freeList.erase(node);</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;      m_pointerMap.erase(node);</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160; </div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;      <span class="comment">// point to the previous node</span></div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;      node = prev_node;</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;    }</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;  }</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160; </div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;  <span class="comment">/* remove_pointer.</span></div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;<span class="comment">   * Removes the given pointer from the map.</span></div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;<span class="comment">   * The pointer is allowed to be reused only if ReUse if true.</span></div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;  <span class="keyword">template</span> &lt;<span class="keywordtype">bool</span> ReUse = true&gt;</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;  <span class="keywordtype">void</span> remove_pointer(<span class="keyword">const</span> virtual_pointer_t ptr) {</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;    <span class="keywordflow">if</span> (is_nullptr(ptr)) {</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;      <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;    }</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;    <span class="keyword">auto</span> node = this-&gt;get_node(ptr);</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160; </div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;    node-&gt;second.m_free = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;    m_freeList.emplace(node);</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160; </div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;    <span class="comment">// Fuse the node</span></div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;    <span class="comment">// with free nodes before and after it</span></div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;    fuse_forward(node);</div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;    fuse_backward(node);</div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160; </div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;    <span class="comment">// If after fusing the node is the last one</span></div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;    <span class="comment">// simply remove it (since it is free)</span></div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;    <span class="keywordflow">if</span> (node == std::prev(m_pointerMap.end())) {</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;      m_freeList.erase(node);</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;      m_pointerMap.erase(node);</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;    }</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;  }</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160; </div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;  <span class="comment">/* count.</span></div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;<span class="comment">   * Return the number of active pointers (i.e, pointers that</span></div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;<span class="comment">   * have been malloc but not freed).</span></div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;  <span class="keywordtype">size_t</span> count()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> (m_pointerMap.size() - m_freeList.size()); }</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160; </div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;  <span class="comment">/* add_pointer_impl.</span></div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;<span class="comment">   * Adds a pointer to the map and returns the virtual pointer id.</span></div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;<span class="comment">   * BufferT is either a const buffer_t&amp; or a buffer_t&amp;&amp;.</span></div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">class</span> BufferT&gt;</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;  virtual_pointer_t add_pointer_impl(BufferT b) {</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;    virtual_pointer_t retVal = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;    <span class="keywordtype">size_t</span> bufSize = b.get_count() * <span class="keyword">sizeof</span>(buffer_data_type_t);</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;    <span class="keyword">auto</span> byte_buffer =</div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;        b.template reinterpret&lt;buffer_data_type_t&gt;(cl::sycl::range&lt;1&gt;{bufSize});</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;    pMapNode_t p{byte_buffer, bufSize, <span class="keyword">false</span>};</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160; </div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;    <span class="comment">// If this is the first pointer:</span></div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;    <span class="keywordflow">if</span> (m_pointerMap.empty()) {</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;      virtual_pointer_t initialVal{m_baseAddress};</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;      m_pointerMap.emplace(initialVal, p);</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;      <span class="keywordflow">return</span> initialVal;</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;    }</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160; </div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;    <span class="keyword">auto</span> lastElemIter = get_insertion_point(bufSize);</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;    <span class="comment">// We are recovering an existing free node</span></div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;    <span class="keywordflow">if</span> (lastElemIter-&gt;second.m_free) {</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;      lastElemIter-&gt;second.m_buffer = b;</div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;      lastElemIter-&gt;second.m_free = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160; </div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;      <span class="comment">// If the recovered node is bigger than the inserted one</span></div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;      <span class="comment">// add a new free node with the remaining space</span></div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;      <span class="keywordflow">if</span> (lastElemIter-&gt;second.m_size &gt; bufSize) {</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;        <span class="comment">// create a new node with the remaining space</span></div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;        <span class="keyword">auto</span> remainingSize = lastElemIter-&gt;second.m_size - bufSize;</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;        pMapNode_t p2{b, remainingSize, <span class="keyword">true</span>};</div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160; </div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;        <span class="comment">// update size of the current node</span></div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;        lastElemIter-&gt;second.m_size = bufSize;</div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160; </div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;        <span class="comment">// add the new free node</span></div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;        <span class="keyword">auto</span> newFreePtr = lastElemIter-&gt;first + bufSize;</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;        <span class="keyword">auto</span> freeNode = m_pointerMap.emplace(newFreePtr, p2).first;</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;        m_freeList.emplace(freeNode);</div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;      }</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160; </div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;      retVal = lastElemIter-&gt;first;</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;      <span class="keywordtype">size_t</span> lastSize = lastElemIter-&gt;second.m_size;</div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;      retVal = lastElemIter-&gt;first + lastSize;</div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;      m_pointerMap.emplace(retVal, p);</div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;    }</div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;    <span class="keywordflow">return</span> retVal;</div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;  }</div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160; </div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;  <span class="keyword">struct </span>SortBySize {</div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;    <span class="keywordtype">bool</span> operator()(<span class="keyword">typename</span> pointerMap_t::iterator a,</div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;                    <span class="keyword">typename</span> pointerMap_t::iterator b)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;      <span class="keywordflow">return</span> ((a-&gt;first &lt; b-&gt;first) &amp;&amp; (a-&gt;second &lt;= b-&gt;second)) ||</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;             ((a-&gt;first &lt; b-&gt;first) &amp;&amp; (b-&gt;second &lt;= a-&gt;second));</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;    }</div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;  };</div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160; </div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;  <span class="comment">/* Maps the pointer addresses to buffer and size pairs.</span></div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;  pointerMap_t m_pointerMap;</div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160; </div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;  <span class="comment">/* List of free nodes available for re-using</span></div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;<span class="comment">   */</span></div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;  std::set&lt;typename pointerMap_t::iterator, SortBySize&gt; m_freeList;</div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160; </div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;  <span class="comment">/* Base address used when issuing the first virtual pointer, allows users</span></div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;<span class="comment">   * to specify alignment. Cannot be zero. */</span></div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;  std::intptr_t m_baseAddress;</div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;};</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160; </div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;<span class="comment">/* remove_pointer.</span></div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;<span class="comment"> * Removes the given pointer from the map.</span></div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;<span class="comment"> * The pointer is allowed to be reused only if ReUse if true.</span></div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;<span class="keyword">template</span> &lt;&gt;</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> PointerMapper::remove_pointer&lt;false&gt;(<span class="keyword">const</span> virtual_pointer_t ptr) {</div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;  <span class="keywordflow">if</span> (is_nullptr(ptr)) {</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;    <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;  }</div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;  m_pointerMap.erase(this-&gt;get_node(ptr));</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;}</div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160; </div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> *SYCLmalloc(<span class="keywordtype">size_t</span> size, PointerMapper &amp;pMap) {</div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;  <span class="keywordflow">if</span> (size == 0) {</div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;  }</div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;  <span class="comment">// Create a generic buffer of the given size</span></div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;  <span class="keyword">using</span> buffer_t = cl::sycl::buffer&lt;buffer_data_type_t, 1&gt;;</div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;  <span class="keyword">auto</span> thePointer = pMap.add_pointer(buffer_t(cl::sycl::range&lt;1&gt;{size}));</div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;  <span class="comment">// Store the buffer on the global list</span></div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;  <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><span class="keywordtype">void</span> *<span class="keyword">&gt;</span>(thePointer);</div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;}</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160; </div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">bool</span> ReUse = true, <span class="keyword">typename</span> Po<span class="keywordtype">int</span>erMapper&gt;</div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> SYCLfree(<span class="keywordtype">void</span> *ptr, PointerMapper &amp;pMap) {</div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;  pMap.template remove_pointer&lt;ReUse&gt;(ptr);</div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;}</div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160; </div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Po<span class="keywordtype">int</span>erMapper&gt;</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> SYCLfreeAll(PointerMapper &amp;pMap) {</div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;  pMap.clear();</div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;}</div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160; </div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;<span class="keyword">template</span> &lt;cl::sycl::access::mode AcMd, <span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;<span class="keyword">struct </span>RangeAccess {</div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">auto</span> global_access = cl::sycl::access::target::global_buffer;</div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">auto</span> is_place_holder = cl::sycl::access::placeholder::true_t;</div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;  <span class="keyword">typedef</span> T scalar_t;</div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;  <span class="keyword">typedef</span> scalar_t &amp;ref_t;</div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;  <span class="keyword">typedef</span> <span class="keyword">typename</span> cl::sycl::global_ptr&lt;scalar_t&gt;::pointer_t ptr_t;</div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160; </div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;  <span class="comment">// the accessor type does not necessarily the same as T</span></div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;  <span class="keyword">typedef</span> cl::sycl::accessor&lt;scalar_t, 1, AcMd, global_access, is_place_holder&gt;</div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;      accessor;</div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160; </div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;  <span class="keyword">typedef</span> RangeAccess&lt;AcMd, T&gt; self_t;</div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE RangeAccess(accessor access,</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;                                                    <span class="keywordtype">size_t</span> offset,</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;                                                    std::intptr_t virtual_ptr)</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;      : access_(access), offset_(offset), virtual_ptr_(virtual_ptr) {}</div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160; </div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;  RangeAccess(cl::sycl::buffer&lt;scalar_t, 1&gt; buff =</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;                  cl::sycl::buffer&lt;scalar_t, 1&gt;(cl::sycl::range&lt;1&gt;(1)))</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;      : access_{accessor{buff}}, offset_(0), virtual_ptr_(-1) {}</div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160; </div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;  <span class="comment">// This should be only used for null constructor on the host side</span></div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;  RangeAccess(std::nullptr_t) : RangeAccess() {}</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;  <span class="comment">// This template parameter must be removed and scalar_t should be replaced</span></div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE ptr_t get_pointer()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;    <span class="keywordflow">return</span> (access_.get_pointer().get() + offset_);</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;  }</div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Index&gt;</div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE self_t &amp;operator+=(<a class="code" href="namespaceEigen.html#a62e77e0933482dafde8fe197d9a2cfde">Index</a> offset) {</div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;    offset_ += (offset);</div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;    <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;  }</div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Index&gt;</div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE self_t operator+(<a class="code" href="namespaceEigen.html#a62e77e0933482dafde8fe197d9a2cfde">Index</a> offset)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;    <span class="keywordflow">return</span> self_t(access_, offset_ + offset, virtual_ptr_);</div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;  }</div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Index&gt;</div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE self_t operator-(<a class="code" href="namespaceEigen.html#a62e77e0933482dafde8fe197d9a2cfde">Index</a> offset)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;    <span class="keywordflow">return</span> self_t(access_, offset_ - offset, virtual_ptr_);</div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;  }</div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;  <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Index&gt;</div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE self_t &amp;operator-=(<a class="code" href="namespaceEigen.html#a62e77e0933482dafde8fe197d9a2cfde">Index</a> offset) {</div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;    offset_ -= offset;</div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;    <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;  }</div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160; </div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;  <span class="comment">// THIS IS FOR NULL COMPARISON ONLY</span></div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator==(</div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;      <span class="keyword">const</span> RangeAccess &amp;lhs, std::nullptr_t) {</div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;    <span class="keywordflow">return</span> ((lhs.virtual_ptr_ == -1));</div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;  }</div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator!=(</div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;      <span class="keyword">const</span> RangeAccess &amp;lhs, std::nullptr_t i) {</div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;    <span class="keywordflow">return</span> !(lhs == i);</div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;  }</div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160; </div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;  <span class="comment">// THIS IS FOR NULL COMPARISON ONLY</span></div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator==(</div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;      std::nullptr_t, <span class="keyword">const</span> RangeAccess &amp;rhs) {</div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;    <span class="keywordflow">return</span> ((rhs.virtual_ptr_ == -1));</div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;  }</div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE <span class="keyword">friend</span> <span class="keywordtype">bool</span> operator!=(</div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;      std::nullptr_t i, <span class="keyword">const</span> RangeAccess &amp;rhs) {</div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;    <span class="keywordflow">return</span> !(i == rhs);</div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;  }</div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;  <span class="comment">// Prefix operator (Increment and return value)</span></div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE self_t &amp;operator++() {</div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;    offset_++;</div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;    <span class="keywordflow">return</span> (*<span class="keyword">this</span>);</div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;  }</div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160; </div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;  <span class="comment">// Postfix operator (Return value and increment)</span></div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE self_t operator++(<span class="keywordtype">int</span> i) {</div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;    EIGEN_UNUSED_VARIABLE(i);</div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;    self_t temp_iterator(*<span class="keyword">this</span>);</div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;    offset_++;</div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;    <span class="keywordflow">return</span> temp_iterator;</div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;  }</div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160; </div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE std::ptrdiff_t get_size()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;    <span class="keywordflow">return</span> (access_.get_count() - offset_);</div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;  }</div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160; </div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE std::ptrdiff_t get_offset()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;    <span class="keywordflow">return</span> offset_;</div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;  }</div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160; </div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE <span class="keywordtype">void</span> set_offset(std::ptrdiff_t offset) {</div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;    offset_ = offset;</div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;  }</div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160; </div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE ref_t <a class="code" href="namespaceEigen.html#a9723b3ff0f2c99fe1081e3eb14380d4c">operator*</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;    <span class="keywordflow">return</span> *get_pointer();</div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;  }</div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160; </div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE ref_t <a class="code" href="namespaceEigen.html#a9723b3ff0f2c99fe1081e3eb14380d4c">operator*</a>() {</div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;    <span class="keywordflow">return</span> *get_pointer();</div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;  }</div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160; </div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE ptr_t operator-&gt;() = <span class="keyword">delete</span>;</div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160; </div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE ref_t operator[](<span class="keywordtype">int</span> x) {</div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;    <span class="keywordflow">return</span> *(get_pointer() + x);</div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;  }</div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160; </div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE ref_t operator[](<span class="keywordtype">int</span> x)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;    <span class="keywordflow">return</span> *(get_pointer() + x);</div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;  }</div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160; </div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE scalar_t *get_virtual_pointer()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">reinterpret_cast&lt;</span>scalar_t *<span class="keyword">&gt;</span>(virtual_ptr_ +</div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;                                        (offset_ * <span class="keyword">sizeof</span>(scalar_t)));</div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;  }</div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160; </div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE <span class="keyword">explicit</span> <span class="keyword">operator</span> bool()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;    <span class="keywordflow">return</span> (virtual_ptr_ != -1);</div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;  }</div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160; </div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE <span class="keyword">operator</span> RangeAccess&lt;AcMd, const T&gt;() {</div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;    <span class="keywordflow">return</span> RangeAccess&lt;AcMd, const T&gt;(access_, offset_, virtual_ptr_);</div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;  }</div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160; </div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE</div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;  <span class="keyword">operator</span> RangeAccess&lt;AcMd, const T&gt;()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;    <span class="keywordflow">return</span> RangeAccess&lt;AcMd, const T&gt;(access_, offset_, virtual_ptr_);</div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;  }</div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;  <span class="comment">// binding placeholder accessors to a command group handler for SYCL</span></div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE <span class="keywordtype">void</span> bind(</div>
<div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;      cl::sycl::handler &amp;cgh)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;    cgh.require(access_);</div>
<div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;  }</div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160; </div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;  accessor access_;</div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;  <span class="keywordtype">size_t</span> offset_;</div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;  std::intptr_t virtual_ptr_;  <span class="comment">// the location of the buffer in the map</span></div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;};</div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160; </div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;<span class="keyword">template</span> &lt;cl::sycl::access::mode AcMd, <span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;<span class="keyword">struct </span>RangeAccess&lt;AcMd, const T&gt; : RangeAccess&lt;AcMd, T&gt; {</div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;  <span class="keyword">typedef</span> RangeAccess&lt;AcMd, T&gt; Base;</div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;  <span class="keyword">using</span> Base::Base;</div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;};</div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160; </div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;}  <span class="comment">// namespace internal</span></div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;}  <span class="comment">// namespace TensorSycl</span></div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;}  <span class="comment">// namespace Eigen</span></div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160; </div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;<span class="preprocessor">#endif  </span><span class="comment">// EIGEN_CXX11_TENSOR_TENSOR_SYCL_STORAGE_MEMORY_H</span></div>
<div class="ttc" id="agroup__Core__Module_html_ga0e45b6b2adead7c6a29815b99f9f14dd"><div class="ttname"><a href="group__Core__Module.html#ga0e45b6b2adead7c6a29815b99f9f14dd">Eigen::placeholders::end</a></div><div class="ttdeci">static const lastp1_t end</div><div class="ttdef"><b>Definition:</b> IndexedViewHelper.h:183</div></div>
<div class="ttc" id="anamespaceEigen_html"><div class="ttname"><a href="namespaceEigen.html">Eigen</a></div><div class="ttdoc">Namespace containing all symbols from the Eigen library.</div><div class="ttdef"><b>Definition:</b> Core:139</div></div>
<div class="ttc" id="anamespaceEigen_html_a62e77e0933482dafde8fe197d9a2cfde"><div class="ttname"><a href="namespaceEigen.html#a62e77e0933482dafde8fe197d9a2cfde">Eigen::Index</a></div><div class="ttdeci">EIGEN_DEFAULT_DENSE_INDEX_TYPE Index</div><div class="ttdoc">The Index type as used for the API.</div><div class="ttdef"><b>Definition:</b> Meta.h:59</div></div>
<div class="ttc" id="anamespaceEigen_html_a9723b3ff0f2c99fe1081e3eb14380d4c"><div class="ttname"><a href="namespaceEigen.html#a9723b3ff0f2c99fe1081e3eb14380d4c">Eigen::operator*</a></div><div class="ttdeci">const Product&lt; MatrixDerived, PermutationDerived, AliasFreeProduct &gt; operator*(const MatrixBase&lt; MatrixDerived &gt; &amp;matrix, const PermutationBase&lt; PermutationDerived &gt; &amp;permutation)</div><div class="ttdef"><b>Definition:</b> PermutationMatrix.h:517</div></div>
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